Hello,
we've a problem with EAS on our Plesk Server with MailEnable Enterprise: with the new version of Outlook 2019, we cannot add attachments to calendar items (https://support.microsoft.com/en-us/help/2503175/exchange-activesync-doesn-t-download-attachments-to-calendar-items-on) because the server use protocol version 14 instead of 16.
If I'll upgrade MailEnable from 10.15 to the last 10.26 release, ActiveSync will be updated to the latest version of the standard, too?
Best regards,
Matteo